AVI to VOX Converter
Extract AVI audio as Dialogic VOX ADPCM format online
AVI to Telephony Audio
Pull voice content from AVI videos and encode it as VOX — the standard ADPCM format for Dialogic-based IVR and phone systems.
Compact Output
VOX uses aggressive ADPCM compression to keep audio files small. Ideal for telephony where storage and bandwidth are at a premium.
Private Conversion
Uploaded AVI files are removed after processing, and VOX output is deleted within 24 hours. Your telephony audio stays confidential.
How to convert AVI to VOX
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose vox or any other format you need as a result (more than 200 formats supported)
Let the file convert and you can download your vox file right afterwards
About formats
Frequently Asked Questions
VOX is a Dialogic ADPCM format widely used in IVR and telephony systems. Converting AVI audio to VOX creates phone prompts from video content.
Interactive Voice Response (IVR) platforms, Dialogic hardware, and telephony software rely on VOX for compact voice storage and playback.
VOX packs 12-bit audio into 4-bit ADPCM, achieving roughly 4:1 compression. This makes it efficient for storing telephony prompts and messages.
VOX is optimized for speech in telephony contexts. Music sounds noticeably degraded — use WAV or MP3 when audio quality matters for music.
VOX is a headerless raw ADPCM format. Playback software needs to know the sample rate in advance, typically 8kHz for standard telephony.